package com.heima.wemedia.service.impl;
import java.util.Date;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.exception.CustException;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.threadlocal.WmThreadLocalUtils;
import com.heima.model.wemedia.dtos.WmMaterialDTO;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.model.wemedia.pojos.WmNewsMaterial;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.mapper.WmNewsMaterialMapper;
import com.heima.wemedia.service.WmMaterialService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.List;
import java.util.UUID;

/**
 * @Author 壮哥
 * @Date 2021/9/23/19:45
 */
@Service
@Slf4j
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper,WmMaterial> implements WmMaterialService {

    @Autowired
    FileStorageService fileStorageService;
    @Value("${file.oss.prefix}")
    String prefix;
    @Value("${file.oss.web-site}")
    String webSite;
    @Override
    public ResponseResult uploadPicture(MultipartFile multipartFile) {
        if (multipartFile==null||multipartFile.getSize()==0){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID,"请上传正确文件");
        }
        WmUser user = WmThreadLocalUtils.getUser();
        if (user==null){
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN);
        }
        String file=null;
        try {
        String originalFilename = multipartFile.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String uuid = UUID.randomUUID().toString().replaceAll("-", "");
        file = fileStorageService.store(prefix, uuid + suffix, multipartFile.getInputStream());
        } catch (IOException e) {
            e.printStackTrace();
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID,"文件上传失败");
        }
        WmMaterial wmMaterial = new WmMaterial();
        wmMaterial.setId(0);
        wmMaterial.setUserId(user.getId());
        wmMaterial.setUrl(file);
        wmMaterial.setType((short)0);
        wmMaterial.setIsCollection((short)0);
        wmMaterial.setCreatedTime(new Date());
        save(wmMaterial);
        wmMaterial.setUrl(webSite+wmMaterial.getUrl());
        return ResponseResult.okResult(wmMaterial);


    }

    @Override
    public ResponseResult findList(WmMaterialDTO dto) {

        // 1 参数校验
        dto.checkParam();

        // 2 执行业务查询
        LambdaQueryWrapper<WmMaterial> wrapper = Wrappers.<WmMaterial>lambdaQuery();

        // 收藏
        if (dto.getIsCollection()!=null&&dto.getIsCollection()==1){
            wrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
        }

        // 当前登录用户的素材
        WmUser user = WmThreadLocalUtils.getUser();
        if (user==null){
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN);
        }
        wrapper.eq(WmMaterial::getUserId,user.getId());
        // 时间倒序
        wrapper.orderByDesc(WmMaterial::getCreatedTime);

        IPage<WmMaterial> page = new Page<>(dto.getPage(), dto.getSize());
        IPage<WmMaterial> result = page(page, wrapper);
        List<WmMaterial> records = result.getRecords();
        for (WmMaterial record : records) {
            record.setUrl(webSite+record.getUrl());
        }
        // 3 封装结果
        PageResponseResult responseResult = new PageResponseResult(dto.getPage(), dto.getSize(), result.getTotal());
        responseResult.setData(records);
        return responseResult;
    }

    @Autowired
    WmNewsMaterialMapper wmNewsMaterialMapper;
    @Override
    public ResponseResult delPicture(Integer id) {

        // 1 参数校验
        if (id==null){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }

        // 2 业务处理
        // 判断当前id是否被引用，如果被使用则禁止删除
        WmMaterial wmMaterial= getById(id);
        if (wmMaterial==null){
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        LambdaQueryWrapper<WmNewsMaterial> wrapper = Wrappers.<WmNewsMaterial>lambdaQuery();
        wrapper.eq(WmNewsMaterial::getId,id);
        Integer count = wmNewsMaterialMapper.selectCount(wrapper);
        if (count>0){
            CustException.cust(AppHttpCodeEnum.DATA_NOT_ALLOW);
        }
        // 删除素材库
        removeById(id);
        // 删除图片OSS
        fileStorageService.delete(wmMaterial.getUrl());
        // 3 封装结果
        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult updateStatus(Integer id, Short type) {

        //1.检查参数
        if (id==null){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2.更新状态
        //获取当前用户信息
        Integer uid = WmThreadLocalUtils.getUser().getId();
        update(Wrappers.<WmMaterial>lambdaUpdate()
                    .set(WmMaterial::getIsCollection,type)
                    .eq(WmMaterial::getId,id)
                    .eq(WmMaterial::getUserId,uid));
        return ResponseResult.okResult();
    }
}
